Rtjfus da wes



R. DAWES.

Heating Stove.

Patented Feb. 2, 1858.

N. PETERS. Phom-Lilhcgmphcr. Wdslungbuln D C on ITE s'rA'rEs PATENTOFFICE.

RUFUS DAWES, OF WASHINGTON, DISTRICT OF COLUMBIA.

STOVE.

Specification of Letters Patent No. 19,240, dated February 2, 1858.

To all whom it may concern:

Be it known that I, Rurus Dawns, of the city of WVashington, in theDistrict of Co lumbia, have invented a new and Improved Mode of BurningCoal in Stoves; and I do hereby declare that the following is a full andexact description thereof, reference being had to the accompanyingdrawings and to the letters of reference marked thereon.

The nature of my invention consists in so constructing the burner (whichconsists of grates or cylinders the one within the other), that the coalor other fuel shall be placed between concentric circles or betweensimilarly disposed boundaries of other forms, made of iron or othersuitable material, so that there may be an abundant supply of oxygenaround and within the fuel; the two currents of air meeting, andconcentrating by means of the cylinder b, somewhat as the oxygen issupplied in the Argand lamp; by which arrangement the smoke of the fuelis effectually consumed, and an extraordinary degree of heat evolved,

To enable others skilled in the art to make and use my invention, I willproceed to deing; 6, 6 representing the outer grate, and e the innergrate between which is placed the fuel, is being a perforated rimbetween the cylinder and the outer bars, and 70 an air passage, the airpassing through the perforated plate f, 9 being the inner passagethrough which the oxygen is supplied centrally; the bars h, 71 beingmade to lift out, in order that the exhausted coal may be raked out, soas to fall into the ash-room through 9; h being the door of the ashroom,and i the door of the opening for shaking down the ashes; 72 representsa rim and flange on which the grate rests and slightly moves, which ismade so that the coal escaping from the grate may fall below into theash-room, Z air-holes to be closed at will by slides.

WVhat I claim as my invention and desire to secure by Letters Patent isThe combination of the outer bars 6 and the inner bars 6, arranged so asto admit an air-passage 9 through the fuel, and an airpassage 70 betweenthe outerbars and the casing b for the purpose of supplying the innerand outer surfaces of the fuel with air, by which arrangement thecombustion of smoke is effected.

RUFUS DAWES. lVitnesses HENRY MITCHELL, ERASTUS BROOKS.

